2021-2025 Jeep Compass ADAS Warning Messages TSB

Advanced Driver Assist Systems (ADAS) are crucial for modern vehicle safety, providing features like adaptive cruise control and forward collision warning. When these systems malfunction, your vehicle's instrument panel cluster (IPC) may display various warning messages, indicating a loss of these critical functions.

Technical Service Bulletin (TSB) S2408000114 Rev. B, released in January 2026, addresses these concerns for specific 2021-2025 Jeep Compass, Chrysler Pacifica, and Dodge Durango models. This bulletin provides guidance for technicians to diagnose and resolve issues leading to these ADAS warnings.

Symptoms of ADAS Malfunction

Owners may observe several warning messages displayed on their instrument panel cluster. These messages indicate that the Advanced Driver Assist System is not operating correctly or is unavailable. If you see a Jeep Compass ADAS warning, it's important to have it checked.

The specific verbatim messages reported by customers include:

• "ACC Unavailable Service Required"
• "Adaptive Cruise Control (ACC) System Disabled"
• "Forward Collision Warning (FCW) Unavailable Service Required"

These warnings signify that the vehicle's safety features are compromised, which can affect driving assistance and collision avoidance capabilities.

Diagnostic Trouble Code (DTC) C14A4-00

When these ADAS warning messages appear, technicians often find a specific Diagnostic Trouble Code (DTC) stored in the vehicle's system. The primary code associated with this issue is C14A4-00.

This DTC, C14A4-00, specifically indicates a "Sensor Adjustment Required." It points to a problem with the calibration or physical positioning of the radar sensor, which is a key component of the ADAS.

Understanding the Root Cause

The Advanced Driver Assist System relies on a radar sensor typically located in the front bumper fascia. Any physical issue with this sensor or its mounting can lead to the observed ADAS warnings and the C14A4-00 DTC. A thorough inspection is crucial for proper diagnosis.

Technicians are instructed to perform a detailed inspection of the module lens, bracket, mounting location, and alignment of the radar sensor. This includes verifying several key points:

• The sensor is not damaged, obscured, or out of alignment.
• The module housing is fully seated and secure.
• Securing clips are not broken or missing.
• The mounting bracket is not bent.
• The ACC Module bracket bolts are properly torqued to specification (4 Nm ± 1 Nm).

Physical damage to the bumper mounting bracket, bumper surround, or valence can also cause the radar's mounting position to be incorrect, leading to the C14A4-00 code. Figures 1 and 2 in the TSB illustrate examples of sensor misalignment and insecure clips.

Important Warnings for Owners and Technicians

It is critical for technicians to understand the proper diagnostic procedure to avoid unnecessary part replacements. The TSB explicitly states: "Do not replace the sensor for this stored code, clear the DTC after and inspection and recalibrate if needed, and retest the operation."

This warning emphasizes that the C14A4-00 code often points to a physical adjustment or repair rather than a faulty sensor itself. Replacing the sensor without addressing the underlying physical issue will not resolve the problem.

Repair and Resolution Steps

The primary repair involves a detailed physical inspection and correction of any identified issues with the radar sensor's mounting and alignment. After inspection and any necessary physical adjustments, the DTC C14A4-00 should be cleared, and the system recalibrated.

If, after performing these steps, the C14A4-00 code continues to set, Stellantis engineering is aware of the persistent issue. They are investigating a software improvement, which is tentatively scheduled for release in the second quarter of 2026. This indicates that some cases may require a future software update to fully resolve the Jeep Compass ADAS warning.

What Owners Should Do

If your 2021-2025 Jeep Compass, Chrysler Pacifica, or Dodge Durango is displaying ADAS warning messages or you suspect a Jeep Compass ADAS warning, it is recommended to contact your authorized dealership. Inform them about the specific warning messages you are seeing and mention Technical Service Bulletin S2408000114 Rev. B.

The dealership technicians are equipped to perform the necessary inspections and adjustments outlined in the TSB. They will be able to diagnose whether the issue is related to physical sensor alignment or if it's a case that might require the upcoming software update.

Source: NHTSA ID 11027734